Windshield cleaner



mr'April 17, 192s.

F. lG. FOLBERTH rs1'A A1.

WIKNDSHIELD CLEANER Filed-April l5. 1924 2 sheets-Shen 1 g l i 61H01 um,

April 17, 192s. 1,666,127

F. FOlrBERTH ETAL,

WINDSHIELD CLEANER g Filed April 15. 1924 2 sheets-sham. 2

l n n n l 2 l l n a n r l n L r l n 1 J1/wanton Patented Apr. 11, 192e UNlrEDsTATEs Ik/Pnfrlri'r OFFICE.

FREDERICK FOLBEBTH AND WILLIAM lllll. FOLBERTH, OF. CLEVELAND, OEIIO, .AS-

SIGNORS TO TRIGO IPRODUCTSCORPORATION, F BUFFALO, NEW YORK, A. CORPORA- TION OF NEW YORK.

WINDSHIELD CLEANER.

Application led April 15, 1924. l'Serial No. 706,748.

This invention relates to e windshield cleaners, and more particularly to valve actuating mechanism for windshield cleaner motors.

An object of the invention is the provision of a valve shifting mechanism in which a valve supporting member is locked in one position during the movement of the piston in one direction and a spring is placed under compressionby the movement of the'pisto'n and brought into engagement with the valve supporting member, to shift the valve` when the locking member is released.'

A further object of the invention is the l5 provision of valve mechanism in which the valve moves fin the same direction that the piston is moving. l A

In the accompanying drawings, we have shown one embodiment of In this showing:v

Figure 1 is a motor casing, y

Figure 2 is a central transversel 'vertical perspective view of the ysectional view. through a motor casingV ar.

ranged on a windshield frame,

Figure 3 is an enlarged front elevation'of ,the central portion of the motor'casing,

parts being shown in section, r

Figure 4 is a Vvertical longitudinal sectional view on line 4-4 of Figure 2,

Figure 5 is an enlarged vertical longitudinal sectional view on line 5 5 of Figure 2,

Figure 6 is` an enlarged horizontal sectional view substantially on line 6- 6` of Figure4=, y

Figure 7 is a detailed disassembled View of the valve and its associated parts, and,

Figure 8 is a perspective view of a segmental gear. l

Referring to the drawings, the reference numeral 1 designates a windshield frame of ordinary construction having a pane 2 of glass or other transparent material arranged therein. The motor for operating the windshield cleaner is adapted to be arranged on the interior of a vehicle and supported on the vWindshield frame. As shown, the .motor casing consists of two cylindrical members 3, having closed outer ends 4. The open ends of the cylindrical members are adapted from they surface of the closure the invention.i

tobe arranged in contact with each other.

to form a cylinder having closed ends. The

edges of the cylindrical members are re- 'Cessed for the reception of a closure plate 5 (seev Figure 6). A clamping element consisting of a circular band 6 is secured to the top and bottom of the closure plate and surrounds the meeting edges of the sections of the casing, The upper portion of the closure plate is provided with a Hat face 7 (see Figure2) adapted to receive an odset portion v8, formed on one end of the band. The band is retained on the closure plate by means of screws 9 or other fastening elements. The other end of the band is provided with openings 10 adapted to receive ears 11 extending plate (see Figure l). An actuating member consisting of a pair of pistons and a longitudinally extending connecting member is arranged within the cylinder. As shown, each piston consists of disks 12'of metal or other rigid material, slightly smaller in diameter than the diameter of the cylinder, having a sheet of rubber or other flexible material 13 arranged between them. The sheet 13 is of larger diameter than the cylinder, forming a flange' or skirt 14 to prevent leakage. These rmembersl are provided with central openings for the reception of a bolt 15, or other fastening element. The pistons are maintained in sacedrelationby means of a connecting mem er 16,having upwardly extending end portions 17, These yend portions are provided with openings for the reception of the boltA 15. The central portion of the connecting member is provided with spaced openings 18, forming a rack.

The cleaner shaft- 19 extends transversely of the motor casing and passes through a bore in the closure plate. A segmental gear 20 (see Figure 48) is mounted-on the shaft tpg ' face of the windshield whenthe ing to the source of suction or pressure.

,passage secured and arranged to travel overthe surshaft and cleaner rod are. oscillated.

The motor is adapted suction or pressure ,and is source of suction or pressure, such as the intake manifold of an internal combustion enginethrough a passage 24 extending from\ the inner face of the closure plate and connected'to a.tube 25 extending from the exterior of the closure plate and adapted to receive 'a flexible conduit- (not shown) extellde 24 communicates with a passage 26 which 4is provided with an enlarged portion 27, forming a valvelseat 28. The enlarged portion 27 is threaded and is adapted to engage threadsfor'med on the stem of a valve 29. This valve projects'from the bottom of the closures vplate and is provided with a handle or wheel 30 to permitl manual operaftion. Atmospheric pressure obtains in the space betweenv the pistons by reason of the fact that `the joint between the cylindrical members is not air tight. In the practical manufacture of this type of c eaner, air readily enters beneath the band 6 and between the members 3, as well 'as around the shaft 19, Iinto the space between the pistons, but for the purposes of illustration', 'an air inlet is accentuated at 6. y'

The opposite ends of the cylinder are provided with openings 31 and tubes or conduits 32, communicating with these openings as shown in Figure 1 of the drawings, and

extending longitudinally of the cylinder to the edges of the closure plate. These tubes are in turn connected to longitudinally extending passages 33, which passages are in` the drawings,

clined as shown in Figure 3 of other. The

to permit them to pass each inner ends of these passages communicate I ure 7 is'pivotally 36 projecting with ,inwardly extending passages 34, which extend to the inner faces o'f the closure plate v and are arranged on opposite sides ofthe suction passage 24.

'A valve supporting member 35 (see Figmounted on a pin or from the inner face of the closure plate adjacent the top of the cylinder.

`As shown," this member is centrally olfsetto permit it to pass around a sleeve 37 through which the cleaner shaft 19 extends. The

lower end of the valve supporting member Ais provided with a horizontal arm 38 and this arm is provided `with an opening 39.

' cup-shaped valve 40 is arranged on the face of the closure plate and is provided with a through -the opening 39. The lower edge o the valve sup orrng member is provided with a recess, or ing shoulders 42. A pin 43 projects from the face of the closure plate to be alternately engaged by 24 and one of the passages to be actuated byv connected to a t spring is the horizontal arm 38 ofy valve supporting member and .Valve to'properly position the valve over the inlet passage 34, as shown inf Figure 6 of the drawings. The horizontal arm 38 is further provided with a projecting 70 lug or finger 44, having an opening 45 therein. A wire 46, or other flexible member, extends from the inner face of one piston, through theopening 45, and is connectedfto the inner face of the other piston. Coil springs 47 are arranged on this wire adjav cent each end.

A substantially T-shaped locking member 48 is arranged adjacent the valve supporting member. -As shown, .the T--shaped member is provided with'an elongated slot 49, adapted to receive a pin 50carried by the closure plate to slidably support the T-shaped member and permit vertical movement thereof. The lower end ofthe T-shaped-member is a5 provided with a reduced portion 51. The upper end of 'the T-shaped member is provided with upwardly projecting arms 52 having horizontally disposed extensions 53.-

A spring 54 is arranged on the pin 36 and au this spring is provided with downwardly extending terminals adapted to rest upon the extensions 53, as indicated at 55. The segmental4 gear is provided with a punchedoutv portion 56, which is adapted to engage 95 the lower faces of the extensions 53 when the gear is oscillated. (see Figure 4).

In operation, with the parts of the motor in the position shown in Figure 4 of the drawingsgfthe pistons are moving to the right wu and' approaching the end of la stroke. Normally, the spring 54 vexerts a downward pressure on the T-shaped locking member 48 and the lower reduced end 51 of the locking member is disposed on one side of the finger 44 of the valve supporting member to prevent ymovement of thel valve supporting member. As the `pistons travel, thespring 47 at the left end of the. piston unit engages the adjacent face of the finger 44 and is no compressed.4 As long as the valve supportw ing member is locked in one positionfthe further compressed. As the piston approaches the end of a stroke, the punched out portion 56 of the segmental 1.15 gear engages the extension ,5&3 to the right of the T-shaped arm and moves the T- shaped' arm upwardly, releasing the, linger,

44 from the,v lower end 51 of' this arm. The compressedl spring immediately forces the A valve supportingmember'to swing in a counter clockwise direction and thisA movement is limited by the engagement of the left shoulder 42 and the pin 43. rllhe Valve lthen assumes the position shown in Figure 6of 125 the drawings, connecting the left end of vthe cylinder to the source\of suction and: tlie ,operation` is reversed. As soon as thepis-w.

tons start to move in the opposite direction, and the segmental gea\r releases the T-shaped nu actuated by the movement of said member arm, thespring 5.4 lowers-this armvto dispose thelower end 51'on' the left side of the finger 42 tolock it while the sammle isstill resiliently held in its' new'.position by the is to be taken as apreferred 'example of the same, and that various changes Iin the shape, size, and arrangement of parts may be resorted to without departing from thefspirit of the invention or joined claims.

We claim: l. Valve actuating `mechanism for wind shield cleaners having a casing, a movable member mounted in said casing and adapted to be actuated by a differenceinvpressurein the opposite ends of the casing, and means to alternately establish communication between the opposite ends of'said cylinder and a sourceof operating pressure, said means comprising an element connected to [said movable member, a spring means arranged on said element, a. pivotally mounted valve supporting member adapted to bel engaged by said spring means, a valve carried by said i support-ing'member, means for positively locking said valve supporting member in either of two positions, and means Jfor releasing-said locking means.

2. Valve actuating mechanism for Windshield cleaners having a casing, a movable member mounted in said easing and' adapted to be actuated by a difference in pressure in the opposite ends' ofthe easing, and means actuated by the)move`ment of said member to alternately establish communication between the opposite ends of said cylinder and a source of operating pressure, said means comprising'V an element connected to said movable member, a spring means arranged on said element', a pivotally mounted valve supporting member adapted to be engaged bysaid spring means, said member being provided with a projecting finger, a valve carried .bysaid member, a movable member normally engaging said` finger to prevent movement of said valve supporting member,

and' means controlled by the movement of said movable member-for moving said movf able member to an inoperative position.

3. Valve actuating mechanismfor windmember mounted -in said casing and adapted to be lactuated by a difference in pressureY in the oppositeends of the casing, and means actuated by the movement of said member, to

alternately establish communication between lthe scope of the subshield cleaners having a casing, a movable ing an a element connected tosaid movable member, ,a spring means arranged on said element,- a pivotally mounted valve support; f

ing member adapted to be'engaged" by said spring means, a valve carried by said niem- I0 ber, a movable member normallylengaging said valve 'supporting member to lock it. against movement, means for normally retaining said member `in its. normal position,

and means controlled bythe movement of said movable member for moving said movable member from its normal position to releasesaid valve supporting member for lmovement by said spring.

4. Valve actuating mechanism for windcontrolled by the movement of said member to alternately establish communication be` tween the opposite ends of said casing and a source of operating pressure, said means comprising an element connected to said' movable member,'a spring means arranged 90 on said element, a pivotally mounted valve supporting member adapted to be engaged by said' spring means, said member being provided with a projecting finger, a valve carried by said member, a movable locking member normally engaging said nger to hold said supporting member against movement while said springl is being compressed thereagainst, a spring engaging said locking member to normally retain it in its operative position in engagementwith said finger, and means actuated by the movement of -said movable member for moving said lockshieldcleaners having a casing, a4 movable ng member-to release said supporting mem- 5. A device constructed in accordance with claim- 4 wherein said locking lmember com. prises a T-sliaped arm, the lower end of which is adapted to engage said finger and the upper -end of which is provided with\ means cooperating with a movable part olM the motor for raising said T-shaped arm`.'

6. A device constructed vin accordance w1th claim '4 wherein lsaid locking member comprises a T-shaped arm, the lower endV of 1.15 which is adapted to engage said finger, and the upper end of which is provided with extensions, the lower faces of s aid extensions being adapted to be engaged by a movable part of said motor to raise said T-shaped arm, and the spring engages' the upper faces of said extensions to normally retain said T-shaped arm in lowered position.

7. A motor for windshield cleaners comprising a casing, having a relatively large opening therein, "a closure plate arranged in said opening, said closure plate being. bored to'provide passages communicating withopposite endsof said easing and a main passage,a valve iiieieiber adapted to connect "o il. ineens? said main passage. alternately with -said pase 11. A motor for windshield cleaners coine sages, a pivotally mounted valve supporting prising a casing, a piston therein, valve acmember, movable-back and' forth from one tuating mechanism for operatively admitto the other of two positions, a locking memting pressure into the casing to operate vthe sV ber normally engagingfsaid supporting memmotor and including a valve shifting mem- 7o berto retain said valve successively in its lbei movable to two positions, a single lock two positionsmeans actuated by a movable for automatically locking 'the shifting meinart of the motor for rendering said lockber in both positions, means for eifecting a ing member inoperative,.and means for shiftmovement of the shifting member from one l ing-said valve when released. position to the other position when said 75 60 erable by and during movement of said pisber, andmeans for moving said member 12 8. A motor for windshield cleaners com! member is released by said lock, and means prising a casinghaving a relatively large for effecting a positive' release of said meine opening therein, a movable actuating inember from said lock during movement of said ber arranged in said casing, a closure' plate piston. i

vnormally closing said opening, said closure 12. A motor for windshield cleaners, comso plate being bored to provide a main passage prising a casing, a pair of connected pistons connected to a source of operating pressure, itherein, valve actuating mechanism for op-` and passages connected to the opposite ends eratively admitting operating pressure to of said casing, a valve adapted to connect the casing and including a valve shifting said main passage and one ofy said passages, member movable to two positions' and hav- 85, a valve supporting member pivotally mounting a lock-engaging part, a wire stretched ed 'on said closure plate and carrying said between the pistons and engaged with said valve, an element connected to said actuating part, a single lock engageable with onev side member, a Spring means carried by said of said part in one position of the valve element for shifting said valve supporting Shifting member and with the opposite side 9o member, a locking member normally engagof said part in the other position of said ing said valve supporting member to hold shifting member to block its movement, a it against movement, and means actuated spring on each end portion of the wire for bythe movement of said actuating member edecting movement of the shifting member for releasing said lookin member. o when released by said lock, and means for 95 9. A motor for winds ield cleaners comrendering the lock inoperative by and durprising a casing, a air ofconnected istons ing movement of the piston. therein, a cleaner s aft journaled in t e case 13. In a motor for windshield cleaners, a ing and operable by .the pistons, valve aceasing, a piston operable therein, a rockable 36 tuatingmechanism arranged within the cas- Wiper shaft operable byfsaid piston, valve 100 ing between the pistons for operatively conmeans for operatively admitting operating necting the casing to a source of operating ressure tdthe casing includingavalve shiftpressure and including avalve shifting meming member movable to two positions, lock ber, resilientmeans movable with each pismeans movable into engagement with said 40 ton for engaging the shifting member by and shiftingmember in either of its two posi- 105 l-during movement of the piston to initially tions for successively holdingthe same store up energy in said resilient-means and against'movementtherein, means carried by then expend its stored up energy .in effecting said shat and engageable with saidV lock a shift of said member, means for locking vthe means toward each limit of oscillatory moveshifting member against movement until ment for rendering said lock means inopeia- 11o said resilient means has suiiicient stored-up tive, and means or'shifting said shifting energy to e'ect a shift of said member, member when released-by said lock means. and means operable by and duringinove- 14. In a motor for windshield cleaners, la nient of the pistons for rendering saidrockcasing, a piston operable therein, a wiper ing means inoperative.

10. A motor for windshield cleaners, co'ineratively admitting operating pressure to lprising a' casing, a piston therein, a shaft said casing including a member movable to operable from the piston, valve actuating two positions, alock slidable into engagement mechanism for o erably connecting the caswith said member in both of its positions for ing to a source o operating pressure and inholding the same against movement, said 12.0 cluding a valve shifting member having a lock having parts arranged on opposite sides lock-engaging part, a lock slidable into enof' said shaft, means operable by said shaft gagement with said part to hold the shiftfor alternately engaging said parts to slide ing member against movement, means Yopsaid lock from engagement with said memton' for moving the shifting member when when released by said lock. released by said lock, and means operable by 15. lin a motor Lfor windshield cleaners, a and during movement of said piston for casing, a piston operable therein, a wiper slidin the lock out of engagement with shaftrockable by the piston, means for opsaid s ifting member. eratively admitting Huid pressure to the 13o shaft rockable by said piston, means :forA opcasing including a member movable to two to an inoperative position, and meansA for ositions, a lock engageable with saidmemmoving said member when vsaid lock is in 10 er in both positions for holding the same operatlve.

therein, said lock having spaced arms strad- In testimony whereof, we vailix our signa- 5 (lling the shaft, means normally holding the tures.

lock operative, means rockable with the shaft for alternately engaging the spaced FREDERICK G. FOLBERTH.

arms and acting thereon to move the' lock WILLIAM M. FOLBERTH. 

